1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
mihalych1998 [28]
3 years ago
13

Answer questions about aspects of Watson-Crick model of DNA structure

Biology
1 answer:
tino4ka555 [31]3 years ago
6 0

Answer:

a. The directionality of the complementary strand is antiparallel. The double-stranded DNA is antiparallel comprising two strands, which run alongside each other, however, point in reverse directions. In a double-stranded molecule of DNA, the 5 prime ends of one strand align with the 3 prime ends of the other strand, and vice versa.  

b. The mediation of base pairing is done by non-covalent hydrogen bonds. It is reversible, that is, the strands can separate and can come combined again without any chemical modification.  

The specificity of base pairing is illustrated by hydrogen bonds that is, the first strand produces hydrogen bonds only with a particular base in the second strand, and these two bases produce a base-pair.  

c. The interaction or association of non-covalent type, that is, hydrophobic interaction and hydrogen bonding. Collectively, they both are strong. In the process, one base associate with the other base on the complementary strand.  

d. The phosphate backbone possesses the tendency to associate with water on the outside of the molecule, and this is favorable chemically as both the strands are held together by hydrogen bond and hydrophobic interaction.  

The polar molecules of sugar can produce hydrogen bonds with the surrounding molecules of water. The negatively charged phosphate group associate with the positively charged ions. The nonpolar nitrogen bases are found within the molecule and associate favorably through stacking interactions.  

You might be interested in
A man and woman are each heterozygous for the autosomal recessive gene for pink hair. They already have two non-pink hair childr
liubo4ka [24]

Answer:

25%

Explanation:

use a punnet square, it shows that the dominant trait will give the offspring 75% chance of having the non pink hair phenotype

6 0
3 years ago
20 pttttttttt quickk​
mote1985 [20]
Answer
C

Explanation:
None
7 0
3 years ago
The members of the kingdom Protista are least similar to . A. plants. . B. animals. . C. bacteria. . D. fungi.. Umm...Help! <
viktelen [127]
In my opinion, the correct answer among the choices listed is option C. The members of the kingdom Protista are least similar to a bacteria. Protists are eukaryotic organisms which cannot be classified as a fungus, animal, or a plant. They are mostly unicellular organisms.
3 0
3 years ago
Why did bear island provide a great opportunity to decipher entire food chains?
Sergio [31]

Answer:

Due to the presence of limited number of species.

Explanation:

Bear island provide a great opportunity to decipher entire food chains because this island has many animals species which interact with each other or depend on one another due to the presence of less animals for feeding purpose. This island is isolated from the rest of the world so it provide a great opportunity to study the entire food chains that are present at that island. There is less number of species so knowing about their feeding choices is easier for the ecologists.

8 0
3 years ago
Which sentence correctly describes the relationship between chromosomes and genes
Oksi-84 [34.3K]
What are the answer choices?

5 0
3 years ago
Read 2 more answers
Other questions:
  • The relationship between humans and their bacteria can be described as
    12·1 answer
  • The water in swimming pools typically about 80F.Mark this temperature on the Fahrenheit thermometer above.Estimate what temperat
    14·1 answer
  • A 4-day-old infant is admitted to the pediatric unit with a cleft lip and palate. surgery to repair the lip is scheduled for lat
    8·1 answer
  • Jayla and her grandma are designing a lunchbox. The lunchbox will be made out
    11·1 answer
  • What does this sequence What does this sequence illustrate?
    9·2 answers
  • Pls help i’m between A and D I NEED THIS ASAP i’ll give branliest !!!!!!!!
    10·2 answers
  • Question 1
    15·1 answer
  • What features relate cephalopods to other mollusks
    6·1 answer
  • Robert Hooke was the first person to observe cells. He observed these cells in
    9·1 answer
  • What is the typical configuration of chromosomes in eukaryotic cells?​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!